In a saucepan, heat the sauce over medium heat; keep warm.,Preheat a large, heavy nonstick skillet over medium-low heat.,Melt the butter, then add the eggs immediately after.,Cook the eggs until they are done, but not dry, gently stirring and turning them over with a wooden spatula to cook evenly, about 6 minutes.,Remove from the pan and serve immediately.,______,Divide the eggs equally between the tortillas and top each taco with 1 heaping tablespoon of ranchero sauce and your choice of hot sauce.,Sprinkle with chopped cilantro.,Grab, fold, and eat right away.,Or build your own taco: lay a tortilla, open face, in one hand.,Spoon on some egg and top with sauces and a sprinkling of cilantro.,Fold and eat right away.